Fluid turbine



'June 19, 1923.

D. KOEHLER FLUID TURBINE 2 sheets-sheet Filed July 50 1921 IN VEN TOR. e K0 eh Ze/r JuneA 19, 1923.

2 Sheetys-Sheet 2 D. KOEHLER FLUID TURBINE Filed July 30. 1921 l IN VE N TOR. e?? 150g/*2221:-

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Patented .lune 19, 1923.

PATE?? FWG..

DELL KOEHLER, OF SAN-IERANCISCO, CALIFORNIA.

rnuin TURBINE.

Application filed July 30,

To all ola/10m t may '00u/cern.'

. Be it known that T, DELL KOEHLER, a citizen ol: the United States.y residing at San Francisco, in the county of San Francisco, State of California, have invented a new and useful Fluid Turbine, of which the tollowing vis a speciiication7 in such full and clear terms as will enable those skilled in the art t construct and use the same.

This invention relates to a fluid turbine and its object is to produce a turbine which is capable ot being very nicely regulated and which will be ot' an extremely simple construction.

Another object of the invention is to produce -a turbine which is capable ot developing power from fluid passed through the same at very low pressures.

Another object of the invention is to produce a turbine which is capable ot developing the maximum power at different steam pressures, the reduction ot steam to the noz* zles being so arranged that no reduction in size in the nozzles is made although a smaller amount of steam is delivered therefrom when less power is required.

Other objects of the invention will appear las the description proceeds.

An embodiment of the invention is shown in the accompanying drawings in which the same reference numeral is applied to the same portion throughout, but T am aware that there may be modifications thereof. I

Fig. 1 is a side elevation of the complete turbine.

Fig. 2 is a vertical sectional view of the complete turbine.

Fig. 3 is a sectional view of the apparatus in plan at right angles to the turbine wheel.

Fig. 4 is a plan view of the mechanism for turning the regulating plate.

Fig. 5 is a side elevation of the turbine whee Fig. 6 is a side elevation of the turbine nozzle plate, and

Fig. 7 is a sectional view ot the turbine nozzles and a portion ot the turbine wheel.

The turbine comprises a cylindrical casing 1 having an inlet pipe 2 and an outlet pipe 3 connected therewith. This casing is covered with a Hat plate 4 which is bolted.

1921. serial Nog/lasten.'

to the casing and which has a bearing 5 for the shaft 7 and a thrust bearing 8 to prevent the thrust from the jets from issuing from the nozzles from moving the turbine wheel 9 away from the nozzles.

The turbine wheel 9 consists of a-.lat plate -to which a plurality of curved buckets 10 .are suitably connected.

These buckets may be made in any way and have raised rims 11. and 12 .at their ends, said raised rims being circular and extending entirely around the rim disk 9. The buckets are placed in three rows concentric with each other7 and there are three concentric rows of nozzles 11', 12, 13 carried by a plate 14 which is secured within the casing 1.

uitable spacers 15 to 18 space it away from the back of the casing a sufficient Tn order to adjust the quantity of fluid passing to the nozzles, the plate 19 has a flat segment rack 24 thereon which is in mesh with a small pinion 25 carried by a sha'lt 30. This shaft has an operatinghandle 31. thereon which may be rotated to engage notches in a fixture 32 connected to the casing and which enables the operator to increase or diminish the quantityof fluid permitted to pass through the nozzles. The shaft extends through a packing gland 33 and the arm 31 is held in engagement with the notches in the xture 32 by means of a spiral spring 34.

Tn operation steamor other gas is ted to v the apparatus through the pipes 36 to and into the casing in back of the plate 19 and the quantity of steam is regulated by regulating the position of the plate 19. As the fluid passes through the nozzles it 1mpinges upon the buckets 10 and drives them torward. Since the nozzles do not occupy the entire space of the plate 14 there 1s ticularly described form, within the purview of my invention.

1. In a fluid turbine, the combination of a casing having inlet and outlet pipes, a partition therein, la plurality of nozzles carried thereby in concentric series several nozzles of each series leading to separate fluid supply chambers, a runner adjacent the nozzles, and means to gradually increase or reduce the fluid supply to each of the separate nozzle chambers whereby the number of nozzles used remains constant regardless of the amount of fluid supplied to the nozzle chambers.

2. In a fluid turbine, the combination of a casing having inlet and outlet pipes, a partition therein, a plurality of nozzles carried thereby in concentric series all the nozzles at Ia given distance from thecenter terminating ina single plane, several of the nozzles being connected with several separate fluid supply chambers, a revoluble disk to regulate the Huid supply to all the nozzle chambers, and means to rotate said disk tov regulate the speed and power of the engine. i In testimony whereof I have hereunto set my hand this 16th. day of July A. D. 1921.

DELL KQEHLER. y 

